US Patent 10284858 Support of multi-mode extraction for multi-layer video codecs

A computing device may obtain, from a first bitstream that includes a coded representation of the video data, a Supplemental Enhancement Information (SEI) message that includes an indication of an extraction mode that was used to produce the first bitstream. If the extraction mode is the first extraction mode, the first bitstream includes one or more coded pictures not needed for correct decoding of the target output layer set. If the extraction mode is the second extraction mode, the first bitstream does not include the one or more coded pictures not needed for correct decoding of the target output layer set.